Method of rolling sheets.



PATENTED MAY 1, 1906.

A. PATERSON.

METHOD OF ROLLING SHEETS.

APPLICATION FILED APR.14. 1905.

INVENTOR Ml fl/C /W WITNESSES much as the piles operated upon in the finishare'rolled together, the temperature an the UNITED STATES PATENT OFFICE.

' METHOD OF ROLLING SHEETS.

Specification of Letters Patent.

iratentea May 1, 1906.

Application fil ed April 14, 1905- Sarial No. 255,628.

.To all whom it may concern: I

Be it known that I, ALEXANDER PATERsoiI, of Wilkinsburg, Allegheny county, Pennsylvania, have invented anew and useful Method of Rolling Sheets, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which Figure 1 is a dia ammatic sectional side elevation showing t e manner of-rolling single sheet bars, and Fig. 2 is a similar view showin the rolling of the pack of three obtained i rom the first operation.

My invention relates to the rolling of sheetbars into thin sheets or plates, and is designed to reduce the cost and increase the output, where an ordinary two-high mill is employed, in single-rolling the sheet-bars.

Heretofore two sheet-barshave been rolled simultaneously on a single two-high mill, using two men, one of whom feeds the plates singly and successively through the reducingpass, while the catcher, orman upon the 0 pcsite side, receives the plates and hands t em over the top of the top roll to the operator who feeds them. After this operatlon the two are then piled and rerolled. The pack of two is then allowed to cool and then opened and piled in three or, more, reheated, and rolled in a two-high stand of rolls. Inasing-mill contain more than two plates, the reheating of the plates has been necessary in order to bring the ack to the proper temperature of finish-r0 ling.

My invention overcomes the reheating of the rolled sheet-bars before finish-rolling and increases the output,while decreasing the cost.

The invention consists in rolling three sheet-bars at a time in an ordinary two-high mill, three men being preferably employed, one of'whom feeds the plates through the reducing-pass,while the other two receive them alternately and pass them back over the top ofthe upper r0 1.

The invention also consists in immediately piling the three plates thus rolled simultaneously and rolling the pack' without reheatin 'taneously on a single roll.

'On the receiving) Inasmuch as the three bars forming the ac thickness of the combined layers will be sufiicient for the three to be rolled as a pack after they are reduced to the desirable amount on the first mill; where they are rolled singly.--

In the drawings, Fig. 1 illustrates, diagrammatically, the rolling of three bars simule In this figure, 2 is the upper roll, and 3 the lower roll, of the ordinary two-high mill, in which the rolls are rotated continuously in the same direction. On the feeding side A, 4 represents the tongs by which the singleo erator on this side feeds the bars successive y into the reducing-pass. side B, 5 represents a set of tongsoperated one man, and 6 tongaoperated by the ot er man, the tongs 5 being shown'in the position of receivin a plate as it is passed through the rolls, whie the tongs 6 are in the osition for passing a rolled plate back over the top of the upper roll. I have found that a single feeder may easily handle the three lates in succession.

After tl ie plates are reduced to the desired ga e the three are immediately piled toget er androlled as a ack, either upon the same mill or, preferab y, upon another twohigh finishing-mill. Thus in Fig. 2, 2* re resents the up er roll, and 3 the lower roll, of the pack-r01 ing two-high mill, in which the pack is rolled down in the ordinary manner, 7 representing the o erators ton s on 1 one side, and 8 those on t e opposite si e.

The advantages of my invention result from the sin lo and simultaneous rollin of three bars; a so, from the piling and rerol ing of the three bars of the pack Without reheating, the oxidation is reduced 'and cleaner sheets are produced. The invention is specially adapted for certain gages of plates but may be used for different gages. The plates are preferably finish-rolled in the pack. of three, though the rolling of the pack may be continued to a thinner gage byreheating and rolling in the ordinary way.

Many variations may be made in the form .asrssnan and arrangement of the mills, feeding devices,

&c., without departing from my invention.

I claim 1. In the method of producin sheets, the

steps consisting of rolling three s eet-bars in too rapid succession on a two-high mill, then imand rerolling the peck without reheating; submediately forming-said three bars into a pack stantially as described. s 10 and rollingsaid pack of three; substantially In testimony whereof I have hereunto set as described. I my hand. i

2. In the method of roducing sheets, the ALEXANDER PATERSON.

steps consisting of rolling three sheet-bars Witnesses: I

sin ly at the same time on a two-high mill, JOHN MILLER,

an then piling said bars into a peek of three, H. M. O R IN. 

